Double envelop.



C. P. CHAMBERLIN Q C. T. FEZZEY.

DOUBLE EHJELOP.

APPLICATION FILED Nov. H. 1914,

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' WI TNESSES:

TTORNE Y.

2 5 the letter.

@Edifici 'lmdillhlllltsldi CLARENCE P. CHMBER/LIN AND CHESTER T. FEZZEY,(JF DETRO'VL, lM1021ISfAN.

DGUBLE ENVELP.

Specification of Letters Patent.

Patented June i, MM5.

application mea november 11. raie. serial nt. 871,453.

Tr all whom it may concern Beit known that we, CLARENCE P. rCnam:-BEnLiN and CHESTER T. Fnzznr, citizens of the United States, residing atDetroit, county 5 of Wayne, State of Michigan, have invented Q. `in theart to `which it pertains to make and use the same, reference being hadto the f'accompanying drawings, which form a part of this specication.

This invention relates to envelops for 1,5 y1inailing purposes and itsobject is a double f" .'pompartment envelop for the joint mailing 'etfirst class and lower class mail matter.

" y/l-leretofore in mailing catalogues or other l.' matter requiringless than' first class postage, 1t has been necessary lto mail suchmatter separately from a letter referring thereto causing much4inconvenience as frequently the matter to which the letter pertains isnot received until a considerably later time-than With the doubleenvelop here shown, the letter accompanies the lovver class matter andboth are received at the same time.

A further object of the invention is an inexpensive envelop for thepurpose which may be formed from a single pieceo material.

These objects and the various novel features of construction arehereinafter more fully described and claimed and shown in theaccompanying drawings in Which- Figure 1 is a perspective view of theenvelop ready for mailing. Fig. 2 is a similar view showing bothcompartments open.

F ig. 3 shows the blank from which the envelop is formed.

Similar characters refer4 to similar parts throughout the drawings andspecification.

The envelop is formed of two separate compartments, the compartment 1being preferably of comparatively large sizeV to receive catalogues,samples, or other lower class mail matter, While the compartment 2 is tobe used for first class mail matter and is practically of the size of an'ordinary letter-size envelop. lIt is to be understood however that bothcompartments may be made of any size desired without departing from thespirit of this invention. The compertinent 2 is provided with a gummedflap 3 by means of which it may be sealed and when sealed thecompartment 2 may be ifolded down over the 'opening et the coinpartmentl providing a closure therefor.

The com artment 1 is preferably provided 1with a den le tongued clasp 1Ladapted to be inserted through an aperture 5 formed near the outer edgeof the compartment 2 when the envelop is' folded and the clasp tonguesare then bent over in the usual manner indicated in Fig. l. This bringsthe reverse side of the compartment 2 to weit on which is to be placedthe address and hrst class postage, as indicated in Fig. l. The reverseside of the compartment 1 is alsoadaptable for :use in addressing onwhich side is valso to be placed thepostage for the lower class matter.

Both compartments areormed from a single blank of the general form shownin Fig. 3. uThe part 1() of the blankl is irst folded on the dotted linel and is glued to the back of the blank substantially on the dotted line12. The flap 13 is then folded over the end of the part 10 and theopposite end is provided with the gummed flap 3 heretofore mentioned, bymeans of which the compartment 2 may be sealed. 'The lower side 'flap 14is next folded over on the body of the blank along the dotted line l5. The similar lower side flap 16 is then folded along the dotted line 17and glued to the first side flap 1d, as is indicated in Figs. land 2.The lower end iiap 18 is then folded over and glued or secured to thebottom ends of the flaps ld and 16 providing a compartment having anopen end as indicated at 19 in vFig 2 With an envelop thus formed,catalogues and other samples may be readily inserted in the compartment1 and a letter relative thereto may be inserted in the compartment 2 andwhich is then sealed with the gummed flap 3. The compartment 2 is thenfolded downward over the mouth of the compartment 1 providing a closuretherefor that may be held in place with `the clasp Il after the mannernow in use with envelope for lower class mail matter.

Having thus briefly described our invention, its utility and mode ofconstruction, what we claim and desire to secure by Let ters Patent oftheUniteol States 1. A blank for forming a double compartment envelopcomprising a main body portion having two comparatively large side iiapsless in length than the said body and adapted to be folded thcreover,one of said flaps being gummed to secure tbe iaps in folded relation,and o gumnled end flap adopted to be folded over and secured to the endsof the said side flops; said body portion having additionalcomparatively smell gumnled side fiaps adjacent the first n1entionedside flops and extending approximately half the remaining length of thebody portion, the remaining' port of tbe said body portion being gnmnledat the end und adopted to be folded upon itself and secured in place,tbe two smell gumined side iinps being. adapted to be folded over theseid folded body portion and secured thereto.

A double compartment envelop coniposed of a blank formed of n singlepiece of material having n moin body portion provided with oppositdsideflaps less in length than the said body and vadopted to be foldedthereover7 one of said flaps being gunnned for attachment to the otherto secure the iaps in folded relation,.a gunnned end flop adopted to befolded over and secured to the ends of the said side flaps; said bodyportion having additional gnmmed side flaps parallel with the firstmentioned side flaps and 4the adjacent 'end of tbe body portion beingguxmned and being adapted to be folded upon itself and secured in place,said :nlditional gummed side liaps being adapted to be folded over theends of said folded body portion and secured thereto.

3. A double compartment envelop oomideneee posed of n blank formed oit'a single piece of materiel having n body portion provided with twocomparatively large side dans greater in length than half the length ofthe body portion and adapted to be folded thereover, one of said llapsbeing gummedlend attaohe'ble to the other to secure the flops in 'foldedrelation, a gummed end fiap adopted to be folded over and secured to theends oi tbe said side flaps, the compartmenttnns formed'being open attbe opposite end, e clasp secured to tbe overlapped portion of saidrideflaps; said body portion of tbe blank baring additional comparativelysmell i;'uxnmed side lizips adjacent the first inen tioned side flapsand extending npproximately half the remaining length of .the body'portion, the body portion being gnnnned at the end and adapted to befolded upon itself? und secured in place, the folded body portionhavingun aperture at the folded end to receive the clasp when tbevcompartments are in folded relation, the 'two small gummed side flapsbeing adapted 'to be folded loverthe-folded body portion and securedthereto.

ln testimony whereof, We sign this speeliication in the presence of twoWitnesses.

CLARENCE P. (')HlrtlilBliltllilll.4 ,Cl-IESTER fl. FEZZEY. WitnessesRICHARD ALsrAs, CHARLES E. Wiens.

